Suggestions for bellmac
The following packages have something in common with the package bellmac. The packages are ordered in decreasing similarity.
- lettermac: Simple macros for writing letters (Plain TeX)
 - letter-plain: Letter macros for Plain TeX
 - letter1: Letter formatting macros
 - make-env: Print USPS standard envelopes
 - beletter: Typeset Belgian letters
 - shsulet: A letter document style for use at SHSU
 - automagic: Automagic numbering in Plain TeX
 - rebuttal: Markup for structured journal and conference paper rebuttals
 - figplace: Floating figures in Plain TeX
 - list: List ASCII text files
 - label-pln: Print address labels in three columns
 - plain-cm: Variable sized fonts in Plain TeX
 - twoside: Two-side typesetting in Plain TeX
 - twocolumns: Knuth's two-column output macros
 - toc-zar: Plain TeX table of contents macros
 - autotoc: Table of contents in Plain TeX
 - appelt-chess: Chess board macros using standard fonts
 - bibplain: Simple macros for using BibTeX with Plain TeX
 - border: Draw a black border around a Plain TeX page
 - boxit: Draw a box around a text
 - bfsymb: Generate bold symbols in Plain TeX mathematics
 - capparmode: Dropped capitals for Plain TeX
 - cassette: Typeset cassette box inserts
 - cropmrks: Add crop marks to a Plain TeX document
 - doublecol: Double-column page macros for Plain TeX
 - defstring: Define macros as verbatim macros
 - dmhgener: Equation, figure (etc.) numbering and referencing
 - fortran: Print Fortran programs
 - fnote: Auto-numbered footnotes in Plain TeX
 - fontbl: A font sampler
 - fnpara-pln: Footnotes in paragraphs